It is accessed from Parada La Vieja, via El Bayo, as well as from Xenestoso, crowning the southern slope at La Gobia Pass.

Plant life

In Lake Negro, there are bivalve molluscs, corixidae, Gerris Velia, dragonfly larvae, caddisflies, Triturus alpestris, Rana temporaria and Salamandra salamandra. Except for the last, the other aquatic animals have also been found in Lake Laranguín, where there is also a great abundance of leeches (Haemopis and Helobdella) and there are Notonecta, Gyrinus natator, Dytiscus marginalis, other beetles, mites and Triturus helveticus.

Wildlife

Vegetation maps show the evolutionary differences between these small lakes. Lake Negro or Rabo de Asno has a rocky shoreline with scant bulbous rush, while buttercup predominates in deeper waters and there is humus deposited both in places where buttercup grows and at the bottom of the lake, the colouring of its waters being due to these deposits. The second lake in terms of plant production is Lake Laringuín, visited today by livestock. Here, Potamogeton is abundant in those areas where fine sediments accumulate most, whereas branched bur-reed predominates in shallower areas and where the lake bed is stony, along with major competitors such as large sedges, as well as Fontinalis and Callitriche in those places where the water flows into the basin.

Lakes Chaguninos and Teixidal are in a more advanced stage - a few temporary pools of water, remains of the primitive lake now silted up and colonized by Carex nostrata, giving rise to moss on which small sedges develop, with their train of bog plants. The bog in places invaded by Erica umbellata begins to merge with the terrestrial environment, a state towards which they are evolving.

Los Lagos del Teixedal forman parte del GR "Por dónde camina el oso".

The scope of the basins and areas is fairly small, as befits the rugged terrain in which they are found. Lake Negro (aka Lake Rabo de Asno or Donkey Tail Lake) is a permanent lake located in the highest cirque, which also belongs to the Teixedal Lakes, Lake Laringuín and Lake Chaguninos.